Sync external content with markers (Getting last marker when user clicks on timeline)

I have some content outside the player that I need to sync with video.

For example when certain markers are reached, I need to pause the video and show some popup question on top of video player. And I dont want user to be able to skip that. Currenly I can register for MarkerReached event and show popup. But if user click on
timeline such that it skips the marker, my popup question wont show up.

Is there a way to get last marker whenever a user jumps around using timeline?